Horobi, Death's Wail, Thornbite Staff, Zirda, the Dawnwaker, and Revel in Riches

Prerequisites

• Horobi, Death's Wail on the battlefield
• Thornbite Staff on the battlefield
• Zirda, the Dawnwaker on the battlefield
• Revel in Riches on the battlefield
• Zirda does not have summoning sickness
• available

Steps

1. Activate Zirda by paying and tapping it, targeting a creature an opponent controls
2. Horobi triggers, destroying that creature
3. When the creature dies, Revel in Riches' first ability and Zirda trigger
4. Resolve the Revel in Riches trigger, creating a Treasure artifact token
5. Resolve the Zirda trigger, untapping it
6. Activate the Treasure by tapping and sacrificing it, adding
7. Repeat
8. You may also repeat this loop whenever a creature enters the battlefield under an opponent's control

Results

• Destroy all creatures that enter the battlefield under an opponent's control
• Destroy any number of creatures opponents control